ugfx/boards/base/STM32F469i-Discovery/CubeHAL/STM32_FLASH.ld

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2017-10-28 09:58:02 +00:00
/*
* GCC linker script for STM32 microcontrollers (ARM Cortex-M).
*
* It exports the symbols needed for the CMSIS assembler startup script for GCC
* ARM toolchains (_sidata, _sdata, _edata, _sbss, _ebss) and sets the entry
* point to Reset_Handler.
*
* Adapt FLASH/RAM size for your particular device below.
*
* @author Bjørn Forsman
*/
MEMORY
{
flash (rx) : ORIGIN = 0x08000000, LENGTH = 320K
ccmram (rw) : ORIGIN = 0x10000000, LENGTH = 64k
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 2048K
}
ENTRY(Reset_Handler)
/*
* Reserve memory for heap and stack. The linker will issue an error if there
* is not enough memory.
*
* NOTE: The reserved heap and stack will be added to the bss column of the
* binutils size command.
*/
_heap_size = 0x200; /* required amount of heap */
_stack_size = 0x400; /* required amount of stack */
/*
* The stack starts at the end of RAM and grows downwards. Full-descending
* stack; decrement first, then store.
*/
_estack = ORIGIN(ram) + LENGTH(ram);
SECTIONS
{
/* Reset and ISR vectors */
.isr_vector :
{
__isr_vector_start__ = .;
KEEP(*(.isr_vector)) /* without 'KEEP' the garbage collector discards this section */
ASSERT(. != __isr_vector_start__, "The .isr_vector section is empty");
} >flash
/* Text section (code and read-only data) */
.text :
{
. = ALIGN(4);
_stext = .;
*(.text*) /* code */
*(.rodata*) /* read only data */
/*
* NOTE: .glue_7 and .glue_7t sections are not needed because Cortex-M
* only supports Thumb instructions, no ARM/Thumb interworking.
*/
/* Static constructors and destructors */
KEEP(*(.init))
KEEP(*(.fini))
. = ALIGN(4);
_etext = .;
} >flash
/*
* Stack unwinding and exception handling sections.
*
* ARM compilers emit object files with .ARM.extab and .ARM.exidx sections
* when using C++ exceptions. Also, at least GCC emits those sections when
* dividing large numbers (64-bit) in C. So we have to handle them.
*
* (ARM uses .ARM.extab and .ARM.exidx instead of the .eh_frame section
* used on x86.)
*/
.ARM.extab : /* exception unwinding information */
{
*(.ARM.extab*)
} >flash
.ARM.exidx : /* index entries for section unwinding */
{
*(.ARM.exidx*)
} >flash
/*
* Newlib and Eglibc (at least) need these for C++ support.
*
* (Copied from Sourcery CodeBench Lite: arm-none-eabi-gcc -V)
*/
.preinit_array :
{
PROVIDE_HIDDEN(__preinit_array_start = .);
KEEP(*(.preinit_array*))
PROVIDE_HIDDEN(__preinit_array_end = .);
} >flash
.init_array :
{
PROVIDE_HIDDEN(__init_array_start = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array*))
PROVIDE_HIDDEN(__init_array_end = .);
} >flash
.fini_array :
{
PROVIDE_HIDDEN(__fini_array_start = .);
KEEP(*(SORT(.fini_array.*)))
KEEP(*(.fini_array*))
PROVIDE_HIDDEN(__fini_array_end = .);
} >flash
/*
* Initialized data section. This section is programmed into FLASH (LMA
* address) and copied to RAM (VMA address) in startup code.
*/
_sidata = .;
.data : AT(_sidata) /* LMA address is _sidata (in FLASH) */
{
. = ALIGN(4);
_sdata = .; /* data section VMA address (in RAM) */
*(.data*)
. = ALIGN(4);
_edata = .;
} >ram
/*
* CCM-RAM data section. Initialization variables can be placed here
* when the initialization code is provided by the user. Else it is used
* as an extra piece of memory for heap/stack
*/
_eidata = (_sidata + SIZEOF(.data));
.ccm : AT(_sidata + SIZEOF(.data)) /* We want LMA address to be in FLASH (if used for init data) */
{
. = ALIGN(4);
_sccm = .; /* data section VMA address (in CCMRAM) */
*(.ccm)
. = ALIGN(4);
_eccm = .;
} >ccmram
/* Uninitialized data section (zeroed out by startup code) */
.bss :
{
. = ALIGN(4);
_sbss = .;
__bss_start__ = _sbss;
*(.bss*)
*(COMMON)
. = ALIGN(4);
_ebss = .;
__bss_end__ = _ebss;
} >ram
/*
* Reserve memory for heap and stack. The linker will issue an error if
* there is not enough memory.
*/
._heap :
{
. = ALIGN(4);
_end = .;
__end__ = _end;
. = . + _heap_size;
. = ALIGN(4);
} >ram
._stack :
{
. = ALIGN(4);
. = . + _stack_size;
. = ALIGN(4);
} >ram
}
/* Nice to have */
__isr_vector_size__ = SIZEOF(.isr_vector);
__text_size__ = SIZEOF(.text);
__data_size__ = SIZEOF(.data);
__bss_size__ = SIZEOF(.bss);